"New question from Sen. Whitehouse," the staff email said. "Sen. Whitehouse is likely to ask [Acting Assistant Attorney General Mythili] Raman whether the Department of Justice is too deferential to IRS in deciding to prosecute 501(c) tax organizations that make false statements regarding their political activities in IRS filings."

"Sen. Whitehouse is curious why, for example if a 501(c) tax organization files were leaked, and they clearly showed that make false statements, [sic] why the Department of Justice wouldn’t prosecute the case by itself and not wait for the IRS," the email continued.

At the hearing, Whitehouse urged the Justice Department to rethink its deference to the IRS in these cases.

"I would urge that the Department and the Service get together and rethink whether in these two specific areas, which I think bear little resemblance to traditional tax violations and are in fact very plain-vanilla criminal cases, whether or not that deference to the IRS is actually serving the public interest at this point," Whitehouse said.

The emails reveal that Whitehouse had specific conservative groups in mind for prosecution, including the American Future Fund, Crossroads GPS, Americans for Responsible Leadership, Freedom Path, American is Not Stupid, Inc., RightChange.com II, and A Better America Now.

"The Obama IRS scandal includes abuse of power by Democrats in Congress who wanted to jail Obama’s political opponents to help secure Obama’s reelection," Judicial Watch President Tom Fitton said. "And Americans should know that the courts have recently concluded the Obama IRS abuses haven’t stopped- even as we approach another presidential election."

Ali MeyerEmail Ali | Full Bio | RSSAli Meyer is a staff writer with the Washington Free Beacon covering economic issues that expose government waste, fraud, and abuse. Prior to the Free Beacon, she was a multimedia reporter with CNSNews.com where her work appeared on outlets such as Drudge Report and Fox News. She also interned with the Heritage Foundation and Pacific Research Institute. Her Twitter handle is @DJAliMeyer, and her email address is meyer@freebeacon.com.